I would not take my own folders into a beauty/department store's make-up section for nail polish either-much as I like my bikes. The following places usually allow a folder into the store: local model train store (a hobby store, crafts store, auto paint store, large discount center like Target or Walmart (I would place the bike into a shopping cart/trolley first-then roll the bike inside. I do take the bike in question for a perfect/close-as-possible match for best results. I prefer paint over nail polish as I want to match not only the color of the bike, but the type of coloring product (in this case, paint). I would not do my own nails with paint-but the right type of coloring product for human nails!